CAPTCHA: Difference between revisions

'''Completely Automated Public Turing test to tell Computers and Humans Apart''' or {{Wplink|CAPTCHA}} was invented in 2000 as a means to deter {{Wplink|Internet bot|bots}} and spam on publicly available websites.<ref name=":0">{{Cite web |last=Burling |first=Stacey |title=CAPTCHA: The story behind those squiggly computer letters |url=https://phys.org/news/2012-06-captcha-story-squiggly-letters.html |website=Phys.org |date=15 Jun 2012 |access-date= |url-status=live |archive-url=https://web.archive.org/web/20120617130133/https://m.phys.org/news/2012-06-captcha-story-squiggly-letters.html |archive-date=17 Jun 2012}}</ref> CAPTCHA tests aim to confirm that the visitor of a website or service is human, usually by presenting a challenge which humans can solve easily, but computer programs cannot. Primary CAPTCHAs used today are [[Google]]'s [[reCAPTCHA]] and hCaptcha.

Services such as [[Google]]'s [[reCAPTCHA]] have been found to be using human input to perform transcription work or train machine-learning models without user consent. On 22 January 2015, a Massachusetts class-action lawsuit attempted to argue Google should pay its users for their labor.<ref>{{Cite web |last1=Shapiro |first1=Thomas G. |last2=Vallely |first2=Patrick J. |title=''Rojas-Lozano v. Google Inc.'' (3:15-cv-10160) |url=https://digitalcommons.law.scu.edu/cgi/viewcontent.cgi?article=1904&context=historical |website=Santa Clara University School of Law Digital Commons |date=22 Jan 2015 |access-date=8 Apr 2026 |url-status=live |archive-url=https://web.archive.org/web/20160209093438/https://digitalcommons.law.scu.edu/cgi/viewcontent.cgi?article=1904&context=historical |archive-date=9 Feb 2016}}</ref> Google's motion to transfer the case to the Northern District of California was granted 12 August 2015,<ref>{{Cite web |last=Mastroianni |first=Mark G. |title=''Rojas-Lozano v. Google Inc.'' (3:15-cv-10160) |url=https://www.courtlistener.com/docket/5127913/31/rojas-lozano-v-google-inc/ |website=Court Listener |date=12 Aug 2015 |access-date=8 Apr 2026 |url-status=live |archive-url=https://web.archive.org/web/20260409000656/https://www.courtlistener.com/docket/5127913/31/rojas-lozano-v-google-inc/ |archive-date=9 Apr 2026}}</ref> where it was dismissed on 3 February 2016.<ref>{{Cite web |last=Corley |first=Jacqueline Scott |title=''Rojas-Lozano v. Google, Inc.'' (15-cv-03751-JSC) |url=https://www.courtlistener.com/opinion/7318166/rojas-lozano-v-google-inc/ |website=Court Listener |date=3 Feb 2016 |access-date=8 Apr 2026 |url-status=live |archive-url=https://web.archive.org/web/20260409002937/https://www.courtlistener.com/opinion/7318166/rojas-lozano-v-google-inc/ |archive-date=9 Apr 2026}}</ref>